tbf, Distributed Systems aren't exactly easy nor common, and each of us either learn from others, or learn it the hard way.
For example, and I don't mean to put anyone on the spot, Cloudflare blogged they'd hit an impossibly novel Byzantine failure, when it turned out to be something that was "common knowledge": https://blog.cloudflare.com/a-byzantine-failure-in-the-real-... / https://archive.md/LK8FI